Public Date:
665421: CVE-2010-4528 Pidgin: MSN DirectConnect DoS (crash) after receiving a short P2P message

The MITRE CVE dictionary describes this issue as:

directconn.c in the MSN protocol plugin in libpurple 2.7.6 through 2.7.8 in Pidgin before 2.7.9 allows remote authenticated users to cause a denial of service (NULL pointer dereference and application crash) via a short p2pv2 packet in a DirectConnect (aka direct connection) session.

Find out more about CVE-2010-4528 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue did not affect the versions of pidgin package as shipped with Red Hat Enterprise Linux 4, 5, and 6 as this issue is specific to versions of libpurple from 2.7.6 up to 2.7.8.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 5
Base Metrics AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 4 pidgin Not affected
Red Hat Enterprise Linux 6 pidgin Not affected
Red Hat Enterprise Linux 5 pidgin Not affected


Red Hat would like to thank the Pidgin project for reporting this issue. Upstream acknowledges Stu Tomlinson as the original reporter.